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setlats_a_stochy.f
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setlats_a_stochy.f
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!>@brief The module 'setlats_a_stochy_mod' contains the subroutine setlats_a_stochy
module setlats_a_stochy_mod
implicit none
contains
!>@brief The subroutine 'setlats_a_stochy' selects the latitude points on this task
!>@details This code is taken from the legacy spectral GFS
subroutine setlats_a_stochy(lats_nodes_a,global_lats_a,
& iprint,lonsperlat)
!
use stochy_resol_def , only : latg,lonf
use spectral_layout_mod , only : nodes,me
!
implicit none
!
integer, dimension(latg) :: global_lats_a, lonsperlat
integer lats_nodes_a(nodes)
integer iprint,opt,ifin,nodesio
&, jcount,jpt,lat,lats_sum,node,i,ii
&, ngrptg,ngrptl,ipe,irest,idp
&, ngrptgh,nodesioh
! &, ilatpe,ngrptg,ngrptl,ipe,irest,idp
!
integer,allocatable :: lats_hold(:,:)
!
allocate ( lats_hold(latg,nodes) )
!
! iprint = 1
iprint = 0
opt = 1 ! reduced grid
if (opt == 2) lonsperlat = lonf ! full grid
lats_nodes_a = 0
! if (liope .and. icolor == 2) then
! nodesio = 1
! else
nodesio = nodes
! endif
!
ngrptg = 0
do lat=1,latg
do i=1,lonsperlat(lat)
ngrptg = ngrptg + 1
enddo
enddo
!
! ngrptg contains total number of grid points.
!
! distribution of the grid
nodesioh = nodesio / 2
if (nodesioh*2 /= nodesio) then
! ilatpe = ngrptg / nodesio
ngrptl = 0
ipe = 0
irest = 0
idp = 1
do lat=1,latg
ifin = lonsperlat(lat)
ngrptl = ngrptl + ifin
! if (me == 0)
! &write(2000+me,*)'in setlats lat=',lat,' latg=',latg,' ifin=',ifin
! &,' ngrptl=',ngrptl,' nodesio=',nodesio,' ngrptg=',ngrptg
! &,' irest=',irest
if (ngrptl*nodesio <= ngrptg+irest) then
lats_nodes_a(ipe+1) = lats_nodes_a(ipe+1) + 1
lats_hold(idp,ipe+1) = lat
idp = idp + 1
! if (me == 0)
! & write(2000+me,*)' nodesio1=',nodesio,' idp=',idp,' ipe=',ipe
else
ipe = ipe + 1
if (ipe <= nodesio) lats_hold(1,ipe+1) = lat
idp = 2
irest = irest + ngrptg - (ngrptl-ifin)*nodesio
ngrptl = ifin
lats_nodes_a(ipe+1) = lats_nodes_a(ipe+1) + 1
! if (me == 0)
! & write(2000+me,*)' nodesio1=',nodesio,' idp=',idp,' ipe=',ipe
endif
! if (me == 0)
! & write(2000+me,*)' lat=',lat,' lats_nodes_a=',lats_nodes_a(ipe+1)
! &,' ipe+1=',ipe+1
enddo
else
nodesioh = nodesio/2
ngrptgh = ngrptg/2
ngrptl = 0
ipe = 0
irest = 0
idp = 1
do lat=1,latg/2
ifin = lonsperlat(lat)
ngrptl = ngrptl + ifin
! if (me == 0)
! &write(0,*)'in setlats lat=',lat,' latg=',latg,' ifin=',ifin
! &,' ngrptl=',ngrptl,' nodesio=',nodesio,' ngrptg=',ngrptg
! &,' irest=',irest,' ngrptgh=',ngrptgh,' nodesioh=',nodesioh
if (ngrptl*nodesioh <= ngrptgh+irest .or. lat == latg/2) then
lats_nodes_a(ipe+1) = lats_nodes_a(ipe+1) + 1
lats_hold(idp,ipe+1) = lat
! lats_nodes_a(nodesio-ipe) = lats_nodes_a(nodesio-ipe) + 1
! lats_hold(idp,nodesio-ipe) = latg+1-lat
idp = idp + 1
! if (me == 0)
! & write(0,*)' nodesio1=',nodesioh,' idp=',idp,' ipe=',ipe
else
ipe = ipe + 1
if (ipe <= nodesioh) then
lats_hold(1,ipe+1) = lat
! lats_hold(1,nodesio-ipe) = latg+1-lat
endif
idp = 2
irest = irest + ngrptgh - (ngrptl-ifin)*nodesioh
ngrptl = ifin
lats_nodes_a(ipe+1) = lats_nodes_a(ipe+1) + 1
! lats_nodes_a(nodesio-ipe) = lats_nodes_a(nodesio-ipe) + 1
! if (me == 0)
! & write(0,*)' nodesio1h=',nodesioh,'idp=',idp,' ipe=',ipe
endif
! if (me == 0)
! & write(0,*)' lat=',lat,' lats_nodes_a=',lats_nodes_a(ipe+1)
! &,' ipe+1=',ipe+1
enddo
do node=1, nodesioh
ii = nodesio-node+1
jpt = lats_nodes_a(node)
lats_nodes_a(ii) = jpt
do i=1,jpt
lats_hold(jpt+1-i,ii) = latg+1-lats_hold(i,node)
enddo
enddo
endif
!!
!!........................................................
!!
jpt = 0
do node=1,nodesio
! write(2000+me,*)'node=',node,' lats_nodes_a=',lats_nodes_a(node)
! &, ' jpt=',jpt,' nodesio=',nodesio
if ( lats_nodes_a(node) > 0 ) then
do jcount=1,lats_nodes_a(node)
global_lats_a(jpt+jcount) = lats_hold(jcount,node)
! write(2000+me,*)' jpt+jcount=',jpt+jcount
! &, 'global_lats_a=',global_lats_a(jpt+jcount)
enddo
endif
jpt = jpt + lats_nodes_a(node)
enddo
!!
deallocate (lats_hold)
if ( iprint /= 1 ) return
!!
if (me == 0) then
jpt=0
do node=1,nodesio
if ( lats_nodes_a(node) > 0 ) then
print 600
lats_sum=0
do jcount=1,lats_nodes_a(node)
lats_sum=lats_sum + lonsperlat(global_lats_a(jpt+jcount))
print 700, node-1,
x node, lats_nodes_a(node),
x jpt+jcount, global_lats_a(jpt+jcount),
x lonsperlat(global_lats_a(jpt+jcount)),
x lats_sum
enddo
endif
jpt=jpt+lats_nodes_a(node)
enddo
!
print 600
!
600 format ( ' ' )
!
700 format ( 'setlats me=', i4,
x ' lats_nodes_a(', i4, ' )=', i4,
x ' global_lats_a(', i4, ' )=', i4,
x ' lonsperlat=', i5,
x ' lats_sum=', i6 )
!
endif
return
end
end module setlats_a_stochy_mod